1. What Class Action Litigation Requires to Get Certified
Class certification is the threshold procedural decision that determines whether a case proceeds as a class action or as individual lawsuits, and it is often the most consequential ruling in the entire case.
Rule 23(a) sets four prerequisites that every proposed class must satisfy. Numerosity requires that the class be so numerous that joinder of all members is impracticable, which courts have generally found satisfied when the class exceeds forty members. Commonality requires that there be questions of law or fact common to the class. Typicality requires that the named plaintiff's claims be typical of the claims of the class as a whole. Adequacy requires that the named plaintiff and class counsel will fairly and adequately represent the interests of the class.
Meeting the Rule 23(a) requirements is necessary but not sufficient. The proposed class must also satisfy one of the three subsections of Rule 23(b). Rule 23(b)(3) is the most commonly used in damages class actions and requires that common questions predominate over individual ones and that the class action be superior to other available methods of adjudication. The predominance requirement is where most class certification motions fail, because defendants argue that individual issues of causation, reliance, or damages are so significant that they overwhelm the common questions the plaintiff has identified.
How Courts Evaluate the Predominance Requirement in Damages Class Actions
Predominance is not satisfied simply by identifying a common question. The common questions must be capable of generating common answers that drive the resolution of the case as a whole, a standard articulated by the Supreme Court in Wal-Mart Stores, Inc. .. Dukes, 564 U.S. 338 (2011).
Plaintiffs establish predominance by showing that liability can be determined through common evidence rather than individualized inquiry for each class member. A price-fixing cartel that charged every purchaser the same inflated price presents common liability evidence. A consumer fraud case where every class member received the same misleading statement presents common proof of deception. A securities fraud case where all class members bought stock at prices affected by the same material misrepresentation satisfies the Basic presumption of reliance that allows fraud-on-the-market cases to proceed as class actions.
Defendants attack predominance by identifying the individual issues that would require separate trials for each class member. In consumer cases, this often involves arguing that class members had different purchasing experiences, different knowledge of the alleged deception, or different reliance on the representations at issue. In employment cases, it involves arguing that each employee's situation requires individualized factual inquiry into their compensation, hours, and supervisory relationships. An attorney who handles consumer class actions cases can evaluate the certification record and identify the strongest arguments for or against predominance given the specific type of harm alleged.
| Rule 23(B) Type | When It Applies | Damages Available | Opt-Out Right |
|---|---|---|---|
| Rule 23(b)(1) | Inconsistent judgments would establish incompatible standards | Limited | No |
| Rule 23(b)(2) | Defendant acted on grounds applying generally to the class | Injunctive and declaratory relief | No |
| Rule 23(b)(3) | Common questions predominate, class action is superior | Monetary damages | Yes |
2. What Class Action Litigation Looks Like for Defendants
Being named as a defendant in a class action is not like being named in an ordinary lawsuit. The exposure, the procedural dynamics, and the strategic considerations are fundamentally different from individual litigation.
The first decision most defendants face is whether to remove the case to federal court under CAFA. The Class Action Fairness Act gives defendants the right to remove a class action to federal court when the aggregate amount in controversy exceeds $5 million and the parties are minimally diverse. Federal courts are generally perceived as less favorable to class certification in consumer cases, which makes removal an important early strategic decision. CAFA removal must occur within 30 days of receiving notice of the class allegations.
Opposing class certification is the central strategic focus of most class action defendants, because a case that is not certified must proceed as individual actions that are economically impractical for most plaintiffs to pursue. A defendant who defeats certification effectively ends the litigation for the vast majority of the class even if individual named plaintiffs can technically continue their own claims. Certification opposition focuses on attacking numerosity, commonality, typicality, adequacy, and predominance through expert evidence, depositions of the named plaintiffs, and motions challenging the class definition.
How Arbitration Clauses and Class Action Waivers Affect These Cases
Arbitration agreements that include class action waivers can prevent class action litigation entirely, requiring each claimant to pursue their claim individually in arbitration rather than as part of a class.
The Supreme Court upheld the enforceability of class action waivers in arbitration agreements in AT&T Mobility LLC v. Concepcion, 563 U.S. 333 (2011), and in Epic Systems Corp. .. Lewis, 584 U.S. 497 (2018), which extended Concepcion to employment arbitration agreements. As a result, consumer and employment contracts that include arbitration clauses with class action waivers are generally enforceable and effectively eliminate class action exposure for the specific claims covered by the arbitration agreement.
Class action waivers have limits. They must be part of a valid, enforceable arbitration agreement. Procedural unconscionability challenges, fraud in the inducement of the agreement, and statutory claims for which arbitration is prohibited by law each provide potential grounds to avoid the waiver. Public injunctive relief claims are not subject to class action waivers in California under Broughton-Cruz doctrine, and federal statutory claims under specific civil rights and employment statutes may not be arbitrable regardless of the waiver. An attorney who handles federal class action defense can evaluate whether an existing arbitration clause covers the claims at issue and whether any exception to enforcement applies.
Class certification is an interlocutory order, not a final judgment, and it can be appealed immediately under Rule 23(f) with permission from the court of appeals. The 14-day window to petition for Rule 23(f) review runs from the date of the certification order. Defendants who do not file a timely Rule 23(f) petition lose the right to appellate review of the certification decision until final judgment, which in a case that settles may never come.
3. How Class Action Litigation Settles and What the Approval Process Requires
Class action settlements require court approval, and the approval process is designed to protect absent class members who did not participate in the negotiation and cannot speak for themselves in the proceedings.
Rule 23(e) requires that a proposed class action settlement be fair, reasonable, and adequate before a court will approve it. Courts evaluate settlements by examining whether the settlement was the product of arm's length negotiations, whether the relief provided to the class is adequate given the risks of continued litigation, and whether the allocation of the settlement fund among class members is equitable. A settlement that provides substantial relief to the named plaintiffs or class counsel while providing minimal benefit to the absent class members is at risk of rejection.
Attorneys' fees in class action settlements are awarded by the court and are subject to independent scrutiny regardless of what the settling parties agreed to. Common fund cases typically result in fee awards of 25 to 33 percent of the total settlement fund, though courts may depart from that range in cases involving particularly large or particularly small funds. Defendant-paid fee agreements in injunctive relief class actions are evaluated for reasonableness without reference to a percentage benchmark.
Why Class Members Should Evaluate Whether to Object or Opt Out
Class members who receive notice of a proposed class action settlement have three options: do nothing and receive whatever the settlement provides, opt out and preserve the right to bring their own individual claim, or object and ask the court to reject or modify the settlement terms.
Opting out is most valuable when the class member has a claim that is substantially larger than the average class member's claim, when they have already identified a lawyer willing to pursue individual litigation, or when they believe the individual litigation risk is low enough to justify the effort of a separate lawsuit. Most class members who opt out never actually file individual claims because the economics do not support individual litigation even after opting out of the class settlement.
Objecting is the mechanism through which class members who believe the settlement is inadequate can raise that concern before the court. A well-supported objection that identifies specific ways in which the settlement undercompensates the class or improperly allocates the settlement fund among subgroups can result in a higher settlement or a revised allocation. Courts take seriously objections that are supported by an analysis of the settlement's economic terms relative to the estimated litigation value of the claims. An attorney who handles class actions and consumer defense cases can evaluate whether the terms of a proposed settlement justify an objection or an opt-out given the specific facts of a class member's individual claim.
Data Breach Class Actions and the Standing Challenge Every Plaintiff Faces
Data breach class actions have become one of the most frequently filed categories of class action litigation, and they present a standing challenge that distinguishes them from most other types of class cases.
Article III standing requires that the plaintiff suffered a concrete and particularized injury. In data breach cases, plaintiffs who have not yet experienced fraud or identity theft from the breach must argue that the increased risk of future harm, or the time and cost of protective measures taken in response to the breach, constitutes sufficient injury for standing. Courts have divided significantly on whether increased risk of future harm satisfies Article III standing requirements, and the circuit split on this issue remains unresolved at the Supreme Court level following TransUnion LLC v. Ramirez, 594 U.S. 413 (2021).
Data breach class actions that survive standing challenges still face significant certification hurdles because individual damages vary widely among class members depending on whether they actually experienced fraud, what information was exposed, and what steps they took in response. An attorney who handles data privacy class action and cybersecurity class action cases can evaluate whether the standing and certification challenges in a specific data breach scenario support a viable class action or whether the facts better support an individual or mass tort approach.
Class action settlements that include injunctive relief alongside monetary damages require separate analysis of the adequacy of both components. An injunction that requires the defendant to change practices the defendant had already planned to change provides no real benefit to the class. Courts have rejected settlements in which the injunctive component was structured to appear significant while delivering little practical change, and class counsel who negotiate such settlements face fee challenges at approval.
4. Frequently Asked Questions about Class Action Litigation
Potential class members who received a settlement notice, companies that have just been served with a class action complaint, and individuals who believe they have a claim that could support a class action each start with different questions about how the process works and what it means for them. The most common questions from each group are answered here.
What Is Class Action Litigation and What Makes It Different from an Individual Lawsuit?
Class action litigation is a procedural mechanism that allows one or more plaintiffs to sue on behalf of a larger group of people who suffered the same type of harm from the same defendant. It consolidates what would otherwise be thousands of individual claims into a single proceeding. The key difference from an individual lawsuit is that the judgment or settlement in a class action binds all class members who did not opt out, including those who never participated in the case. Class actions are governed by Rule 23 of the Federal Rules of Civil Procedure in federal court.
How Does a Court Decide Whether to Certify a Class?
A court certifies a class when the proposed class satisfies Rule 23(a)'s four requirements of numerosity, commonality, typicality, and adequacy, and also satisfies one of the three Rule 23(b) subsections. In damages class actions, which proceed under Rule 23(b)(3), the plaintiff must additionally show that common questions of law or fact predominate over individual questions and that a class action is superior to other available methods of adjudication. Certification is not automatic and is frequently contested through extensive briefing and expert testimony.
Can an Arbitration Clause Prevent a Class Action from Being Filed?
Yes, when the arbitration clause includes a valid class action waiver. The Supreme Court has upheld the enforceability of class action waivers in consumer contracts in AT&T Mobility LLC v. Concepcion and in employment contracts in Epic Systems Corp. .. Lewis. A valid arbitration clause with a class action waiver requires each claimant to pursue their claim individually in arbitration rather than as part of a class. Exceptions exist for certain statutory claims and when the agreement itself is unenforceable for fraud, unconscionability, or other contract law defenses.
What Should I Do When I Receive a Class Action Settlement Notice?
Read the notice carefully to understand what rights you are being asked to give up, what the settlement provides, and what the deadlines are for opting out or objecting. The opt-out deadline is firm and missing it means you are bound by the settlement. If your individual damages are significantly larger than the per-class-member recovery the settlement offers, or if you believe the settlement terms are unfair to the class as a whole, consulting with an attorney before the deadline is the most effective way to evaluate your options.
What Is the Difference between a Class Action and a Mass Tort?
A class action proceeds under Rule 23 and resolves claims through a single certified class proceeding with a binding judgment or settlement for all class members. A mass tort involves many individual plaintiffs who suffered similar injuries from the same defendant but whose claims are tried individually or in small groups, often consolidated through multidistrict litigation for pretrial proceedings under 28 U.S.C. § 1407. Mass torts are used when individual damages vary significantly enough that a single class trial would be impractical, as is common in pharmaceutical and product liability cases. An attorney who handles mass tort and MDL cases can advise on which procedural vehicle is more appropriate for the specific type of harm alleged.
How Are Class Action Attorneys' Fees Determined?
In common fund class actions, attorneys' fees are typically awarded as a percentage of the total settlement fund, with 25 to 33 percent as the general benchmark, subject to court approval regardless of what the parties agreed to. Courts evaluate the fee request against the work performed, the result achieved, the risk the attorneys assumed at the outset, and the fee awards in comparable cases. In statutory fee-shifting cases, fees are calculated using the lodestar method multiplying reasonable hours by a reasonable hourly rate. An attorney who handles class action litigation can explain the specific fee structure that applies to the type of case at issue.
01 Jul, 2025
